Solve for l
l=\frac{p-2w}{2}
Solve for p
p=2\left(w+l\right)
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p=2l+2w
Use the distributive property to multiply 2 by l+w.
2l+2w=p
Swap sides so that all variable terms are on the left hand side.
2l=p-2w
Subtract 2w from both sides.
\frac{2l}{2}=\frac{p-2w}{2}
Divide both sides by 2.
l=\frac{p-2w}{2}
Dividing by 2 undoes the multiplication by 2.
l=\frac{p}{2}-w
Divide p-2w by 2.
p=2l+2w
Use the distributive property to multiply 2 by l+w.
Examples
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y = 3x + 4
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Matrix
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Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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